Door-securing means.



A. COTTON.

' DOOR SECURING MEANS.

APPLIOAIV'ION FILED NOV. 6, 1908.

PatntedMay 25, 1909.

Amos/ms ill DOOR-SECURING MEANS.

Application November 6, 1908.

Specification of Letters Patent.

Patented May 1901",.

Serial No. 461.2892.

Subject i 1e King of Great Britain. and

ments in Door-- hud therein ?o the accompanying drawings, in \\'lll( llx Figure 'l is .2; front elevation of the door and its suppin-ting frame, the head of one of the securing bolls being removed to more rlsnrly show the constriwtion of the door;

Fig. 2 an enlarged side elevation; Fig; 1% a understood that it may be used fora variety of other purposes such as doors for charging furnaces, or heatingchambers, or for gas producers, coal hoppers and the like.

One of the main objects of the invention is to provide means whereby the gravity of the door will hold it tightly againstthe frame through which the door opening is forn'ied.

A further ob' ct of the invention is to provide adjustable means wl'iereby the door may be so adjus ed as to fit accurately around the edges of the door opening.

Referring to the various parts by numerals, l designates the frame of the door. This frame may be a separate plate bolted to the furnace wall, or it may be the wall itself. Through this frame is formed the usual door opening and around the edges of this opening is formed a marginal flange 2 which forms a seat for the door. The door 3 is formed with an inwardly extending cor responding flange 4 which is fitted accurately against vthe outer surface of the flange or seat 2 so as to form a tight joint therewith.

In the frame 1 near the sides of the door opening are forwardly extending bolts 5, each of said bolts being provided with a lock nut 6-which bears against the late or frame 1. The inner sidesof the eads 7 l. Miran-.11; tori-ox, a l

of Newark. county of edges with lateral enlzirgcmeins wuring Means, of which the following a .\])(E(Jlil(2ii.l()ll. reference being the enlargements l) are ilini'un'urdly bevat Sin Fig. -i.

of these bolts are inwardly beveled. s.= id

inncr sides being cone-like us shonn vii-girl;

The door 3 is pri'i ided on each of its side .i whi h,

when the door is lll'llluslilhll, lit loosely between the bolts 5. The lower nds f elcd, as at it), said beveled edges l'oiining guiding means to center the d or between the bolts and o er the door o l Juni the :upper end of ouch. enhngemcm .9 3H

tended laterallyio form the lugs 11' extend into the path. of thabolts 5. The outer faces of the: lugs. in their hover ends, are downwardly and inwardly he r-- eled, as at 12, (shown cleurl; in l ig. ii) said beveled surfaces being adapted in engage the correspondingly inclined inner surfaces of the bolt heads 7. The result of this ron struct-ion is that the weight of the door causes the lugs 11 to slide downwardly and inwardly on the inclined innertuces of the bolt heads until its flange 4 seats squarely against the outer surface of the flange 2 of the frame A handle 13 is prol'craiiily provided for lifting the door into and out of position.

It will readily be seen that the bolts 5 may be so adjusted as to secure the proper tit between the door and the door seat. It will not be necessary to so cast the parts that they will accurately fit; neither will it be necessary to exercise special carein the manufacture of the parts, as the bolts may be readily adjusted to secure the proper lit of the door and to prevent the lugs 11 from contacting with the bolts 5 lt-will also be readily understood that should the marginal flange or sent on the frame, or the llnnge on the door or the inclined face- 1'. or cone 8 wear to any conside'able degree the bolts may be adjusted inwardly to com v nsnte for said wear and to secure a tight joint between the door and the frame.

It will be noted that very little fitting is necessary to adjust this door to the door opening, the adjustment being made by set" ting the bolt 5 and locking it. with the nut 6. When any wear takes place the bolts 5 are simply re-set and relockcd. It wilhtherefore, be. seen that sait'ldoor is ellicient, cheap and simple in construction and operation.

llavhig thus described my invention, what I claim as, new and desire to secure by Letters Patent is 1. The combination of a frame formed with a door opening, a gravity door formed with two outwardly extending beveled lugs on its side edges, bolts mounted in the frame one at each side of the door opening and adapted to be adjusted toward and from the frame, each of said bolts being formed with a head on its outer end, said head being conical on its inner surface and adapted to be engaged. by the beveled in s on the door, whereby said door will her ireeted' inwardly toward the door frame.

2. The combination of a frame formed with a dooropening, a gravity door formed with two outwardly extending lugs on its conical portion on its outer end, said conical side edges, a bolt rotatably mounted in the frame at'each side of the door opening, each of said bolts being formed with a head on its outer end, said head being conical on its inner surface andadapted to be engaged by the lugs on the door, whereby said door will he directed inwardly toward the door frame.

3. Aframe formed with a door opening, a gravity door formed with two outwardly extending beveled lugs on its side edges, a

bolt rotatably mounted in the frame at each side of the door opening, each of said bolts being formed with a head. on its outer end and adapted to be engaged by the beveled lugs on the door, whereby said door will be directed inwardly toward the door frame.

4. A frame formed with a door opening, a gravity door formed with two outwardly ex- .ical portions will tending beveled lugs on its side edges, a bolt rotatably mounted in the frame a-t'each side of the door opening, each of said bolts being formed with ahead on its outer end, said head being conical on its inner surface and adapted to be engaged by the beveled lugs on the door, whereby said door will be directed inwardly toward the door frame, and guiding enlargements on the sides of the door to center the door between the bolts.

5. The combination with a frame formed with a door opening, a gravity door formed with two outwardly extending lugs on its side edges adapted to extend beyond the door opening, supports mounted in the frame one on each side of the door opening, each of said supports being provided'with a portion tapering inwardly toward the frame and being adapted to be moved inwardly and outwardly on the su )port with respect to the sup orting frame, the lugs on the door exten( ing over the supports and bein arranged to engage the upper suifaces'b'l t e conical portions of'the supports, whereby said conireet the door inwardly toward the door frame. v

In testimony whereof I hereunto ailix my signature in the presence ol two witnesses this lth-day of Novernber 1908.

.iiLFl tED COTTON.

\Vitnesses:

EMMA Il. ll. KAUFMANN, Wu. K. ])Avis. 

